<!DOCTYPE html>
<html lang="zh-CN">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>client客户端</title>
  <style>
    * {
      padding: 0;
      margin: 0;
      box-sizing: border-box;
    }
  </style>
</head>

<body>
  <img src="./img/client.png">
  <img src="./img/鼠标位置.jpg">
  <!-- 
    client就是客户端的意思。可以动态的获取到元素的大小，边框的大小等
   -->
</body>

</html>